肿瘤是失去了正常生物调控的异常生长、分化的细胞和组织，其区别于其他疾病的临床特征是（）。

A.肿瘤的局限生长

B.肿瘤的转移特性

C.晚期肿瘤无症状

D.早、中期肿瘤无症状

E.肿瘤早期即可诊断

Questions 11 to 18 are based on the conversation you have just heard.

A．The woman’s boss didn’t know she was late for work.

B．The woman’s boss asked why she wasn’t there on time.

C．Tile woman’s boss doesn’t have a habit of being on time.

D．The woman’s boss wants her to keep a habit of being punctual.